Bed-movement.



V. LYNNEQUEST..

BED MOVEMENT.

APPLIUATION FILED Nov. 2z. 1912.

1,095,120. y Patented Apr.28,1914.

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BBD MOVEMENT.

APPLICATION FILED Nov. 22, 1912.

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V. LYNNEQUEST. BED MOVEMENT. A APPLICATION FILED 11011.22, 1912.

1,095, 1 20. Patented A111128, 1914.

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vieron Humanitair, or enana, NEBRASKA, iis'srenon or one. vman lro armoire .1. transmittal@ 79;l

Nit-mman animaron, Ln BRoNgBoTH or OMAHA, nnsnasxa BED-MOVEMENT.

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` Specification fLetters atent.

Patented Apr; 2s, mia.

y )Application led November 22, .19112. Serial-No. 733,014.

Be it knownth-at-I, Vieron LYNNEQUEST, a citizen of the United States,and a resident of Gmaha, in the county Yof VDouglas and State Yof Nebraska, have `invented certain new and useful. Improvements in Bed- Movements, of which the following is a specification.

. rangement are are disposed My inventioiirela'tes to printing presses, and especially to presses 'of the'bed-and-cylinder type or thosein which the type-forms on va bed which has a reciprocating movementin a horizontal plane, and the paper is pressedy onto the typel by a cylinder which makes one revolution during the making of the impression and while 'its surface is moving 'with the bed, and is then raised out of contact or away from the `bed and makes a secondrevolution While the'bed moves back tothe initial position, the paper being discharged :from the cylinder during the second revolution thereof.

Myjinvention relates particularly to the driving or actuating mechanism for presses of the described class, and it is the object thereoi'toprovide a simple, comparatively inexpensive and durable driving mechanism, capable of operation at. high speed without causing excessive jarring or vibration, and an improved trip mechanism or `means :t'or preventing an impression being made should glie paper not be properly fed to the cylin- Constructions embodying my invention are show-n in the accompanying drawings, in whichl Figure 1 is a vside View of part of a press with my actuating mechanism applied thereto, Fig. 2 is an end view of the same, Fig.

3 is a vertical longitudinal sectional view:-

of Fig.

taken on the plane of the line -m of the essentially of ordinary construction and arthe frame 1, the cylinder 2,

the feed-table 3, the bed 4, the bed trackrollers 5,1 and the toggle mechanism for raisl Said mechaing and loweringthe cylinder. msm comprises the vertically-slidable rods 6 which extend downwardly vfrom the cylinder-shaft bearings, sliding heads 7 arranged in vertical guideways in the frame imparts to the result of 'this is to andconnccteditothelowerends of said rods,

springs 8 arranged beneath t-he heads 7 toggl`e+links 9 connecting the heads 7 and the iframe, and va transverse Ashaft 10 conneetin'g theltcgglelinks.l The lcylinder is 'lowered to the' contact or impression poshaft l10 such as sition by movement-of the alineto bri-ng the toggle-links into vertical ment with each other, the' impression-position by movement of the shaft 1() such as lto throw the .toggle-links out of the vertically-alined position.

The"toggle-shaft 10 iis actuated by means of a cam-bar 11 which engages the central part of the shaft, the bar having an arcuate slot 12 therein through which the toggle- 'shaft passes, and near' one end having a longitudinal slot 13 through which passes a 'transverse shaft 14 suitably journaled in the frame. On said shaft 14 is avcam 15 which engages rollers 16 carried on the bar l1 and bar an intermittent longitudimovement.' The cam-bar nal reciprocating 17 which is adapted toenhas a tail-portion gage the end of lthe trip-lever '18 `so that when the -outer'end of the trip-lever is depressed tli'e cam-bar is raised thereby. The

toggle-shaft 10 is lnormally in theupper.

portion of the arcuate-slot '12, but when the cani-baris raised by depressing the trip- 'lever the shaft passes into the lower part of said slot, and the slot is so formed that the shorten the effective length of the cam-bar between the shafts 10 and 14 and cause lthe cylinder to be raised slightly higher thanpwhen the cam-bar is in the normal position. As the amount et vertical movement imparted to the cylinder by the cam 15 remains practically constant, the

increased lifting of the cylinder results 4in it'being kept out of contact -with the typeform on the bed as long as the trip-lever is held down4 and the cam-bar held in the raised position. The cylinder will continue,v

however, to be raised and lowered at each alternate revolution thereof.

The cylinder-shaft 19 and the shaft 14 are both driven constantly, in the'v directions indicated, by means of a gear-train which connects them with the main ,drive-shaft 20, as follows: The shaft'20 carries a pulley 21 which is connected by belt with a suitable source xof power, such as an electricv motor.

and is raised out of y which meshes with a gear-'23 carried on' the outer end of a stub-shaft 24 journaled in the side-member of the frame 1. .On the inner end of the shaft 24 is a pinion 25 which meshes with a gear 26 carried on the shaft 14. An intermediate gear 27 is mounted on a stud 28 at the side of the frame and meshes with the gear 23 and the gear 29 carried on the end of the cylinder-shaft. The intermediate gear 27 is so arran ed with reference to the cylinder-gear 29 t at the vertical movements of the latterl will not interfere with the rotary driving connection. The ratios of the gear-train aresuch that the shaft 14 makes one revolutionl tov each two revolutions of the. cylinder and the gear 23 makes one and a. half revolutions to each revolution of the cylinder-gear.

On the lower l side of the reciprocating bed' 4 are securedracks 30' which are constantly in mesh with gears 31 Icarried on a transverse shaft 32 journaled in the frame beneath and parallel to the cylinder-shaft. On the end of the shaft 32 is a gear 33 which is adapted to mesh with. the cylinder-gear 29 when the cylinder is in its lower position4 or in the partially lowered position permitted when the trip-lever is operated to raise the cam-bar, as before described. rlihe vertical movements imparted to the cylinder by the toggle mechanism aresuch that when the cylinder is raised thegears 29 and 33 pass out of mesh.

On the shaft 14. is a segmental or ,mutilated gear 34 which has teeth on approximately half of its 'peripheral face, the same 'being adapted to mesh with a gear 35 carried on the bed-driveshaft 32. A gear-segment36 -is pivoted on the frame, as shown, and is connected with a crank-pin 37 on the gear 23 by means of a suitable connectingrod 38, so that the rotation of said gea-r 23 imparts a reciprocating; movement to they said segment 36. The teeth of the segment `are adapted to mesh with a segment 39 secured on the outer side of the gear 33, as

f shown.

Referring now to the operation of the described mechanism, during the movement of the bed 4 forwardly, or in the direction indicated in Fig. 3, the cylinder is in the lowered position so that the paper carried thereby will be pressed against the typeform on the bed and receive an impression' therefrom.' The' cylinder being in the low- -ered position, the cylinder-gear 29 and the gear 33 are in mesh so that the shaft 32 and the bed are in direct geared connection with the cylinder. During this phase of the operation the driving connection from the main drive-shaft 20 to theA bed is made through the following members of the actuating mechanism: the pinion 22, gear 23, gear 27, gear 29, gear 33, shaft 32, `gears 31 and racks v30. As the bed approaches the,forward limit of its stroke, or at about the position shown in Fig. 3, the cylinder 1s raisedby thetoggle-mechanism so that the gears 129 and' 33 vpass out of mesh. Just lprior to this, however, the segment. 39 on the gear 33 approaches the vposition shown in Fig. 1,`the crank-pin on the gear 23 is movingv upwardly' and actuating the segv ,ment 36 in like direction, and the segments ally stopped and then reversed in direction.

In large presses the stopping of the movement of the bed may be'assisted by a pneumatic buffer-cylinder 40 such as is ordinarily employed in presses of this class. After'the rearward movement of the bed has been started bythe downward movement of the walking-segment 36, the mutilated-gear 34 comes into mesh with the gear 35 so that-the` driving of the bed rearwardly is continued after the segments 36 and 39 pass out of mesh. During this phase of the operation the driving connection from the shaft 20 to the bed is made through the following members of the actuating mechanism: the pinion 22, gear'23, shaft 24, pinion 25,'gear 26, shaft 14, gear 34, gear 35, shaft 32, gears 3l and racks 30. As the bed approaches the rearward limit of its movement, and just before the mutilated-gear 34' asses out of mesh with the gear 35, the gear 33 is moving inthe direction of the dotted arrow A in Fig. 1 and the segment 39 is moving downwardly at the side of the gear adjacent to the crankgear 23. At the same time, the crank-pin 37 is moving downwardly at a posit-ion about diametrically opposite to the -position thereof shown in Fig. `1 and is thus actuating the 'walking-segment 36 in a downward direction. 'In consequence the walking-segment and the segment 39 pass into mesh Whilethey are both moving in the same direction, and areain mesh before the gears 34 and 35 pass out of mesh. As the crankpin 37 passes across the lower dead-center the movement of the shaft 32 and the bed is stopped and then reversed, as before described, except that all the movements are in the opposite directions. After the forward movement of the bed has been started by the driving connection formed through the walking-segment, the cylinder is lowered by the action of the cam and toggle mechanism, so that the gears 29 and 33 pass into `end o f its'stroke,

. cylinder-gear, a

mesh before the segments 36 and 39 pass 'out of mesh. bed is then completed with the driving connections as at first described. s

In connection with the operation of the mechanism it should be noted that in making the vario-us changes in the driving connections to the shaft 32, whereingears pass` into and out of mesh the same direction and at substantially the same speed. Thus, both times that the walking-segment 36 engages the segment 39, said g segments pass into meh with a rolling movement, both moving in the same direction and at practically the same speed, so that the engagementoccurs without shock The forward movement of the..-

in ea'ch case the gears come into mesh while both are moving 1n or jar. Similarly the engagement betweenE the mutilated gear 34 and the gear 35 occurs when they are movin in the same direc-' tion. Similarly also, the engagement of the i cylinder-gear 29 and the gear 33 occurs when the latter gear has been startedto move the same 'direction as the cylinder-gear and has reached about the same speed. y

With .reference to the crank-gear 23 it should be noted that the same-forms an element of the gear-train connection from the driving-shaft 20 to both the lcylinder-gear- QS) and the shaft 14,- and also, by virtue of the speed ratio between it and the `cylindergear, it is enabled to actuate the' walkingsegment so that the same isY moved in the appropriate directions to cause insequence the desired retardation, stoppin@ and revers- 2 ing of the movement of the lied at each The reversing of' the movement of the bed being causedby a crank-driven member during the passage of the crank-pin across a dead-center, takes place smoothly and easily so as not lto vcause excessive jarring or vibration of the press. This enables the press to bei` operated ata relatively high speed, and in small and light presses 1t is possible to dispense with the usual buffer-cylinders for slowing down the movement of the bed at the ends of its stroke. I

Now, having described my invention, what I claim and desire to secure by Letters Patent is:

1. In a bed-and-cylinder printing press, a bed-drive shaft, a main drive-shaft, gearing connecting the main drive-shaft and cylinder-gear for actuatingr the lattercontinuously,.acam-shaft, means actuated thereby for lifting the cylinder during the alternate revolutions thereof, a gear on the bed-drive shaft arranged to engage the cylinder-gear when the cylinder is in lowered position, a mutilated gear on the cam-shaft, a gear on the bed-drive shaft engageable 'by said mutilated ear so as to bedriven thereby while the cyi'nder is lifted, a crank-actuated oscillating member, and

. and cam-shaft to rotate themy -meansY for connecting the same with 'the 'bed-drive "shaft: as the bed approaches each limit-of its movement.

2. In 'a ress of the inder, a riving shaft, gearing connecting said shaftand the cylinder forcontinuously rotating the `latter in one direction, means for 'elevatin the -cylinder during alternate revolutions xereof, a `bed-drive shaft, actuating' means for said shaft connected with 'the cylinder -when the same 'is in lowered'A position and ldisconnected from the cylinder by elevation thereof, actuating means adapted' tofvconne'ct the driving shaft and beddriveshaft during the time that the latter is disconnected from the cylinder, a crankdriven r'eciprocating element,. and means for connecting the same with the bed-drive shaft intermittently to reverse the direction ofy movement 'of the sai-d shaft.

3..r In a. press of the class described, a reciprocating-bed 'a hed-drive shaft gear-connected therewith, two-gears fixedly secured on the bed-:drive shaft, continuously-moving actuating means rengageable with .one of sai/d gears to',l actuate the bed in one direction,. continuously-moving Lactuating *means enfgageabl'e with the other gear to move the bed in the other direction, van oscillating actuating element, means for connecting said element with'the lbed-drive shaft as the bed approaches each limit of xits movement so that the movement 'of the bed ywill be thereby reversed simultaneously with the re- Iversa'l movement of the oscillating element, and primary actuating. means operatively 'connected`\with: the several parts, whereby the continuously-moving actuating meansv` arev engaged .with thekrespective gears on the bed-drive shaft alternately.. after the successive reversals of movement of the bed.

4. In a bed-and-cylinder printing press,l a` cylinder shaft, a reciprocating bed, a main drive-shaft, a cam-shaft, gearing connecting the main drive-shaft with the cylinder-shaft y continuously, a bed drive-shaft I ear-connected with the bed, a gear carried by said shaft, a gear carried by the cylinder-shaft and cngageable with the gear 'on the bed-drive shaftto actuate the same, means actuated by the Scamshaft for elevating the cylinder-shaft to dis engage said 'gears during alternate revolutions of the c l-inder-shaft, a mutilated gear on the cam-s aft, a gearl on the bed-drive shaft engageable by said mutilated gear during a part vof the time that the cylindershaft is raised, and means for reversing the direction of movement of the bed-drive shaft before each engagement of the gears on the bed-drive shaft by the mutilated gear and by the gear on the cylinder-shaft.

5. In a-press of the class described,a reciprocating bed, a bed-drive shaft gear-connected therewith, a mam drive-shaft, a cylinclass described, la cyli ously in one direction, means for raising and lowering the cylinder during alternate revolutions thereof, actuating means for connecting the cylinderand bed-drive shaft while the cylinder is in lowered position, said actuating means being disconnected by raising of `the cylinder, actuating means connecting the main drive-shaft and bed-drive shaft intermittently, whereby the latter is driven while the cylinder is in raised position, a crank-driven reciprocating member,

and means for connecting the same with the bed-drive shaft during the raising and lowering of the cylinder, 'said member moving in alternatingl directions during its successive periods of connection wit-h the bed-drive shaft.

6, In a press of the class described, a reciprocating bed, abcd-drive shaft connected therewith, a cylinder adjacent to the bed, means'for continuously driving the cylinder, said means including a cylinder-gear ixedly connected therewith, a gear secured on the bed-drive shaft and directly engageable with the cylinder-gear whereby said shaft may be driven in one direction-by said cylinder-gear, means for raising the cylinder during alter- .-nate revolutions thereof to disengage the cylinder-gear from said gear on the beddrive shaft, and means controlling the cylina gear secured to the bed-drive shaft vand directly cngageable with the cylinder-gear whereby said shaft may be driven in one direction by said cylinder-gear, means for raising the cylinder to d-isengage the cylindergear from said gear on the 'bed-drive shaft, means for reversing the direct-ion of movement of the bed-drive shaft before and after each engagement of said gears, means for actuating the bed-drive shaft in the direction opposite to that in which it is driven by the cylinder-gear, and means controlling the cylinder-raising means whereby the normal distances between the bed and cylinder may be increased without preventing engagement of the cylinder-gear and the gear on the beddrive shaft.

In testimony whereof I have hereunto subscribed my name in the presence of two witnesses.

VICTOR LYNNEQUEST. Vitnesses D.' O. BARNELL, A. R. MITCHELL. 

